GS-I: World Physical Geography

Differentiate between “Strait” and “Isthmus”. Discuss the location of two straits and two isthmuses while focus on their economic and strategic importance.

January 25, 2018

Strait is a navigable waterway that connects two large water bodies, while Isthmus is a thin strip of land that connects two larger areas of land. Importance of control over Isthmuses and Straits Control over straits and Isthmuses by a country helps it to establish good control over the connected sea and shipping lanes of

Explain the terms: (1) Aurora Borealis  and Aurora Australis (2) Dry adiabatic lapse rate and moist adiabatic lapse rate

January 25, 2018

Aurora Borealis and Aurora Australis Aurora is referred to as polar lights observed around the magnetic poles in the northern as well as in southern hemispheres.  It results due to collisions between electrically charged particles from the sun and the earth’s atmosphere. These bright polar lights are known as “Aurora borealis” in the north and “Aurora

Draw a map indicating location of tropical rainforests in the world. Discuss their importance to mankind.

January 25, 2018

Rainforests cover only 6% of the total Earth’s land surface. The major portion of rainforests is located in the Amazon River Basin in South America. These are also found in western Africa and parts of Southeast Asia and Madagascar Island. In India, rainforests are found in Western Ghats and Andaman and Nicobar Islands. Importance of rainforests